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有一次,微信朋友圈中分享了一道关于而积计算的题目,非常有意思,如下图:题目是以动画形式演示的,一个边长为8厘米的正方形,按照上左图中所示,分割成两个底和高分别是3厘米、8厘米的相同的直角三角形——甲和乙,以及两个上、下底分别是3厘米、8厘米,高是5厘米的、相同的直角梯形——丙和丁。将甲乙、丙、丁按照上右图所示,拼成一个长、宽分别是13厘米、5厘米的长方形。动笔算算,发现图中正方形的面积为8×8=64(平
Once, it is interesting to share a question on the subject of calculation in WeChat circle of friends, as shown in the following figure: The title is presented as an animation. A square with an edge of 8 cm is divided into The two right and the bottom of the same triangle with a height of 3 cm and 8 cm respectively - A and B, and the two upper and lower bases are 3 cm, 8 cm and 5 cm high respectively, the same right trapezoid - C and D. The A, B, C, as shown on the right, spell into a long, wide, respectively, 13 cm, 5 cm rectangle. Actually calculated and found that the square area of the figure 8 × 8 = 64 (flat